YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1917 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.10 | 0.40 | 0.00 | 0.00 | 0.00 | 0.50 | g | |||||
1918 | 1.55 | 0.55 | 1.43 | 0.01 | 0.00 | 0.00 | 1.59 | 5.94 | ----- | z | 0.55 | 0.54 | 1.56 | 13.72 | a | |||||||||||
1919 | 0.30 | 1.03 | 1.35 | 0.10 | 0.06 | 0.00 | 2.33 | 2.45 | 1.56 | 0.04 | 1.57 | 0.05 | 10.84 | |||||||||||||
1920 | 2.37 | 1.43 | 1.31 | 0.00 | 0.43 | 0.02 | 0.23 | 3.44 | b | 0.09 | 0.27 | 0.00 | 0.00 | 9.59 | ||||||||||||
1921 | 0.20 | 0.03 | 0.12 | 0.02 | 0.04 | 0.00 | 0.64 | 3.39 | 0.59 | 0.20 | 0.10 | 1.98 | 7.31 | |||||||||||||
1922 | 1.78 | 0.62 | 1.08 | 0.12 | 0.34 | 0.15 | 0.69 | 0.26 | 0.40 | 0.00 | 1.10 | 0.45 | 6.99 | |||||||||||||
1923 | 0.25 | 0.65 | 1.04 | 0.02 | 0.22 | 0.00 | 1.02 | 1.01 | 0.26 | 0.02 | 4.91 | 3.37 | 12.77 | |||||||||||||
1924 | 0.00 | 0.00 | 1.45 | 0.43 | 0.00 | 0.00 | 0.32 | 0.00 | 0.18 | 0.45 | 0.41 | 0.76 | 4.00 | |||||||||||||
1925 | 0.00 | 0.00 | 0.15 | 0.42 | 0.00 | 0.73 | 0.34 | 0.84 | 2.89 | 1.25 | 0.17 | 0.44 | 7.23 | |||||||||||||
1926 | 0.86 | a | 0.09 | 1.36 | 3.09 | 0.07 | 0.00 | 2.36 | 0.21 | 1.03 | 0.06 | 0.01 | 3.07 | 12.21 | ||||||||||||
1927 | 0.00 | 1.38 | 0.33 | 0.55 | 0.37 | 0.52 | 0.75 | 1.72 | 0.37 | 0.20 | 0.42 | 1.20 | 7.81 | |||||||||||||
1928 | 0.03 | 1.10 | 0.17 | 0.00 | 0.20 | 0.00 | 0.92 | 2.09 | 0.32 | 0.26 | 0.14 | 1.29 | 6.52 | |||||||||||||
1929 | 1.08 | 0.35 | 0.05 | 0.15 | 0.00 | 0.00 | 0.37 | 1.19 | 0.59 | 0.28 | 0.09 | 0.00 | 4.15 | |||||||||||||
1930 | 1.34 | 0.22 | 1.75 | 0.34 | 1.48 | 0.45 | 0.78 | 0.61 | 1.04 | 0.14 | 0.41 | 0.00 | 8.56 | |||||||||||||
1931 | 0.00 | 3.85 | 0.00 | 0.34 | 0.07 | 0.00 | 0.24 | 2.61 | 0.37 | 1.02 | 1.85 | 1.08 | 11.43 | |||||||||||||
1932 | 0.11 | 2.92 | 0.00 | 0.10 | 0.00 | 0.11 | 0.44 | 0.10 | 0.38 | 0.65 | 0.00 | 2.21 | 7.02 | |||||||||||||
1933 | 3.38 | 0.30 | 0.00 | 1.05 | 0.00 | 0.00 | 0.65 | 0.28 | 0.55 | 0.71 | 0.90 | 0.00 | 7.82 | |||||||||||||
1934 | 0.30 | 0.71 | 0.24 | 0.20 | 0.12 | 0.01 | 0.11 | 3.33 | 0.35 | 0.00 | 0.83 | 1.88 | 8.08 | |||||||||||||
1935 | 1.05 | 2.12 | 1.03 | 0.08 | 0.26 | 0.00 | 0.47 | 2.04 | 0.59 | 0.00 | 0.58 | 0.47 | 8.69 | |||||||||||||
1936 | 0.58 | 1.03 | 0.35 | 0.00 | 0.00 | 0.00 | 1.41 | 0.40 | 0.25 | 0.20 | 0.69 | 1.69 | 6.60 | |||||||||||||
1937 | 1.38 | 0.55 | 1.84 | 0.00 | 0.00 | 0.34 | 0.65 | 0.13 | 0.21 | 0.00 | 0.00 | ----- | z | 5.10 | a | |||||||||||
1938 | 0.32 | 0.77 | 0.84 | 0.00 | 0.00 | 0.14 | 0.31 | 0.33 | 0.42 | 0.00 | 0.00 | 1.78 | 4.91 | |||||||||||||
1939 | ----- | z | 0.55 | 0.29 | 0.16 | 0.00 | 0.00 | 0.09 | 2.39 | 7.55 | 0.01 | 0.45 | 0.01 | 11.50 | a | |||||||||||
1940 | 0.05 | 1.30 | 0.00 | 0.00 | 0.00 | 0.00 | 0.21 | 0.40 | 1.02 | 1.41 | 0.15 | 4.58 | 9.12 | |||||||||||||
1941 | 1.25 | 2.91 | 3.63 | 2.27 | 0.79 | 0.00 | 1.16 | 1.83 | 0.54 | 0.48 | a | 1.50 | 1.76 | 18.12 | ||||||||||||
1942 | 0.07 | 1.41 | 0.49 | 0.99 | 0.00 | 0.00 | 1.70 | 0.27 | 0.15 | 0.25 | 0.00 | 0.22 | 5.55 | |||||||||||||
1943 | 1.30 | 0.02 | 0.48 | 0.11 | 0.00 | 0.01 | 0.19 | 2.85 | 0.64 | 0.21 | 0.00 | 1.98 | 7.79 | |||||||||||||
1944 | 0.43 | 2.11 | 1.15 | 0.35 | 0.56 | 0.00 | 1.31 | a | 0.23 | a | 0.20 | 0.21 | 1.80 | 0.77 | 9.12 | |||||||||||
1945 | 1.59 | 0.17 | 1.08 | 0.00 | 0.00 | 0.00 | 0.75 | 0.47 | 0.00 | 1.14 | 0.00 | 0.30 | 5.50 | |||||||||||||
1946 | 0.86 | 0.06 | 0.00 | 0.11 | 0.00 | 0.00 | 1.29 | 0.13 | 4.14 | a | 0.20 | 0.93 | 0.68 | 8.40 | ||||||||||||
1947 | 0.00 | 0.07 | 0.00 | 0.00 | 0.39 | 0.00 | 0.10 | 2.37 | 0.05 | 0.40 | 0.84 | 0.56 | 4.78 | |||||||||||||
1948 | 0.00 | 0.45 | 0.24 | 0.00 | a | 0.00 | 0.26 | 0.60 | 0.20 | 0.00 | 0.24 | 0.00 | 0.97 | 2.96 | ||||||||||||
1949 | 1.76 | 0.03 | 0.09 | 0.23 | 0.02 | 0.49 | 0.05 | 1.51 | 0.30 | 0.58 | 0.08 | 1.76 | 6.90 | |||||||||||||
1950 | 0.41 | 0.81 | 0.37 | 0.00 | 0.00 | 0.00 | 0.26 | 0.17 | 0.11 | 0.00 | 0.44 | 0.00 | 2.57 | |||||||||||||
1951 | 1.82 | 0.26 | 0.10 | 0.81 | 0.25 | 0.00 | 1.04 | 7.32 | 0.17 | 1.35 | 1.66 | 1.10 | 15.88 | |||||||||||||
1952 | 1.48 | 0.23 | 2.05 | 1.64 | 0.00 | 0.06 | 0.87 | 1.19 | 0.11 | 0.00 | 2.23 | 0.68 | 10.54 | |||||||||||||
1953 | 0.31 | 0.78 | 0.57 | 0.03 | 0.05 | 0.00 | 0.84 | 0.78 | 0.00 | 0.00 | 0.13 | 0.13 | 3.62 | |||||||||||||
1954 | 2.55 | 0.56 | 1.53 | 0.00 | 0.00 | 0.32 | 0.43 | 0.00 | 1.61 | 0.09 | 0.00 | 0.02 | 7.11 | |||||||||||||
1955 | 3.01 | 0.02 | 0.00 | 0.01 | 0.00 | 0.60 | 0.96 | 2.12 | 0.00 | 0.08 | 0.00 | 0.04 | 6.84 | |||||||||||||
1956 | 0.28 | 0.49 | 0.00 | 0.00 | 0.00 | 0.04 | 0.56 | 0.80 | i | 0.03 | 0.57 | 0.00 | 0.04 | 2.01 | a | |||||||||||
1957 | 2.35 | 1.39 | 0.75 | 0.08 | 0.17 | 0.23 | 1.56 | 0.82 | 0.00 | 1.70 | 0.14 | 0.08 | 9.27 | |||||||||||||
1958 | 0.02 | 1.77 | 1.07 | 0.57 | 0.07 | 0.00 | 0.24 | 0.42 | 3.31 | 0.51 | 0.40 | 0.00 | 8.38 | |||||||||||||
1959 | 0.76 | 1.44 | 0.00 | 0.17 | 0.00 | 0.00 | 1.61 | 1.75 | 0.38 | 1.49 | 0.56 | 4.02 | 12.18 | |||||||||||||
1960 | 0.53 | 0.15 | 0.38 | 0.00 | 0.03 | 0.00 | 0.62 | 1.13 | 0.00 | 0.81 | 0.13 | 0.07 | 3.85 | |||||||||||||
1961 | 0.45 | 0.00 | 0.49 | 0.00 | 0.00 | 0.00 | 1.02 | 1.21 | 0.07 | 0.05 | 0.00 | 1.50 | 4.79 | |||||||||||||
1962 | 1.53 | 0.89 | 0.48 | 0.00 | 0.00 | 0.10 | 0.03 | 0.04 | 0.60 | 0.00 | 0.28 | 0.28 | 4.23 | |||||||||||||
1963 | 0.35 | 1.04 | 0.33 | 0.32 | 0.00 | 0.00 | 0.00 | 2.53 | 0.05 | 1.23 | 1.25 | 0.00 | 7.10 | |||||||||||||
1964 | 0.21 | 0.21 | 0.44 | 0.06 | 0.00 | 0.00 | 1.03 | 2.55 | 0.48 | 0.83 | 0.25 | 0.84 | 6.90 | |||||||||||||
1965 | 1.57 | 1.94 | 1.17 | 2.00 | 0.40 | 0.30 | 1.08 | 0.45 | 0.91 | 0.00 | 0.96 | 3.63 | 14.41 | |||||||||||||
1966 | 0.47 | 1.16 | 0.22 | 0.00 | 0.00 | 0.01 | 0.86 | 0.75 | 2.82 | 0.23 | 0.29 | 0.46 | 7.27 | |||||||||||||
1967 | 0.22 | 0.00 | 0.23 | 0.14 | 0.02 | 0.18 | 1.20 | 0.29 | 1.06 | 0.26 | 0.97 | 4.66 | 9.23 | |||||||||||||
1968 | 0.26 | 1.42 | 1.14 | 0.00 | 0.00 | 0.06 | 0.72 | 1.06 | 0.00 | 0.34 | 1.10 | 0.52 | 6.62 | |||||||||||||
1969 | 1.81 | 0.85 | 0.59 | 0.22 | 0.29 | 0.00 | 0.00 | 0.70 | 0.49 | 0.00 | 1.19 | 0.50 | 6.64 | |||||||||||||
1970 | 0.01 | 0.28 | 1.76 | 0.00 | 0.00 | 0.00 | 0.13 | 1.31 | 3.90 | 0.08 | 0.05 | 0.45 | 7.97 | |||||||||||||
1971 | 0.27 | 0.31 | 0.00 | 0.01 | 0.05 | 0.00 | 1.13 | 1.17 | 0.60 | 0.33 | 0.00 | 0.42 | 4.29 | |||||||||||||
1972 | 0.00 | 0.00 | 0.00 | 0.00 | 0.03 | 0.16 | 0.97 | 1.05 | 0.13 | 3.29 | 0.87 | 1.88 | 8.38 | |||||||||||||
1973 | 0.09 | 1.60 | 1.68 | 0.07 | 0.10 | 0.00 | 0.07 | 0.12 | 0.00 | 0.00 | 0.82 | 0.00 | 4.55 | |||||||||||||
1974 | 1.36 | 0.00 | 0.97 | 0.00 | 0.00 | 0.00 | 1.02 | 0.16 | 0.58 | 2.40 | 0.46 | 1.36 | 8.31 | |||||||||||||
1975 | 0.06 | 0.34 | 0.50 | 0.26 | 0.00 | 0.00 | 0.26 | 0.00 | 0.78 | 0.32 | 0.48 | 0.45 | 3.45 | |||||||||||||
1976 | 0.00 | 1.06 | 0.12 | 1.04 | 0.79 | 0.00 | 0.81 | 0.06 | 1.63 | 1.87 | 0.08 | 0.52 | 7.98 | |||||||||||||
1977 | 0.99 | 0.10 | 0.11 | 0.06 | 0.09 | 0.00 | 0.08 | 0.01 | 0.87 | 0.67 | 0.00 | 0.27 | 3.25 | |||||||||||||
1978 | 2.95 | 3.30 | 4.05 | 0.26 | 0.01 | 0.00 | 0.25 | 0.78 | 0.15 | 0.39 | 2.02 | 2.27 | 16.43 | |||||||||||||
1979 | 2.70 | 0.08 | 2.18 | 0.05 | 0.40 | 0.11 | 0.19 | 0.74 | 0.00 | 0.05 | 0.14 | 0.03 | 6.67 | |||||||||||||
1980 | 1.72 | 2.73 | 0.95 | 0.85 | 0.06 | 0.00 | 0.50 | 1.70 | 0.55 | 0.03 | 0.00 | 0.13 | 9.22 | |||||||||||||
1981 | 0.80 | 0.89 | 0.90 | 0.33 | 0.00 | 0.00 | 0.00 | 0.04 | 1.19 | 0.58 | 1.21 | 0.00 | 5.94 | |||||||||||||
1982 | 0.73 | 1.38 | 1.93 | 0.00 | 0.33 | 0.00 | 1.69 | 1.78 | 0.30 | 0.03 | f | 2.77 | 2.05 | 12.96 | a | |||||||||||
1983 | 0.61 | 1.28 | 2.30 | 0.14 | 0.00 | 0.00 | 0.30 | 1.05 | 4.27 | 0.52 | 0.61 | 0.92 | 12.00 | |||||||||||||
1984 | 0.25 | 0.00 | 0.00 | 0.47 | 0.00 | 0.16 | 4.10 | 1.58 | 3.51 | 0.42 | 1.13 | 4.20 | 15.82 | |||||||||||||
1985 | 0.82 | 0.81 | 0.52 | 0.08 | 0.00 | 0.00 | 0.88 | 0.45 | 0.51 | 0.91 | 2.00 | 1.36 | a | 8.34 | ||||||||||||
1986 | 0.10 | 1.19 | 1.44 | 0.08 | 0.01 | 0.07 | a | 0.55 | 0.61 | 0.29 | 0.77 | 0.25 | 1.00 | 6.36 | ||||||||||||
1987 | 0.91 | 1.85 | 0.10 | 0.00 | 0.03 | 0.00 | 0.34 | 1.12 | 0.12 | 0.72 | b | 1.44 | a | 1.84 | 8.47 | |||||||||||
1988 | 1.21 | 2.15 | 0.12 | a | 1.34 | 0.00 | 0.00 | 0.19 | a | 2.46 | 0.00 | 1.10 | ----- | z | 0.00 | 8.57 | a | |||||||||
1989 | 0.98 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.02 | 0.14 | 0.73 | 0.00 | ----- | z | 1.87 | a | |||||||||||
1990 | ----- | z | 1.02 | 0.28 | ----- | z | 0.00 | 0.50 | 2.00 | 2.68 | 2.52 | 0.91 | 0.22 | 0.24 | 10.37 | b | ||||||||||
1991 | 0.54 | 0.44 | 2.96 | ----- | z | 0.00 | a | ----- | z | 0.00 | 0.64 | 0.34 | 0.59 | 0.59 | 1.94 | 8.04 | b | |||||||||
1992 | 1.71 | 4.33 | 3.01 | 0.85 | 1.42 | 0.15 | 1.40 | 2.36 | 1.04 | 0.06 | 0.00 | 2.76 | 19.09 | |||||||||||||
1993 | 6.14 | 2.31 | 1.03 | ----- | z | 0.00 | q | 0.00 | 0.00 | 1.21 | 0.00 | 1.09 | 2.71 | 0.05 | 14.54 | b | ||||||||||
1994 | 0.02 | 0.46 | 1.89 | 0.03 | 0.25 | 0.06 | 0.59 | 0.02 | 2.85 | 0.38 | 0.41 | 3.15 | 10.11 | |||||||||||||
1995 | 1.64 | 0.14 | 0.87 | 0.58 | 0.02 | 0.00 | 0.04 | 0.83 | 0.72 | 0.00 | 0.65 | 0.01 | 5.50 | |||||||||||||
1996 | 0.02 | b | 1.10 | 1.28 | 0.00 | 0.00 | 0.00 | 1.43 | 1.55 | 1.48 | 0.20 | 0.09 | a | 0.00 | 7.15 | |||||||||||
1997 | 0.56 | b | 1.01 | 0.26 | a | 0.67 | 0.01 | b | 0.00 | 0.12 | 1.45 | 0.72 | 0.07 | 0.32 | 1.32 | f | 5.19 | a | ||||||||
1998 | 0.43 | 4.24 | 1.72 | 0.28 | 0.00 | 0.00 | 1.25 | 1.13 | 1.22 | 0.72 | b | 0.43 | 0.47 | d | 11.89 | |||||||||||
1999 | 0.06 | 0.68 | a | 0.30 | a | 1.36 | 0.05 | c | 0.28 | 1.98 | c | 0.37 | 1.13 | 0.00 | 0.00 | 0.00 | l | 6.21 | a | |||||||
2000 | 0.05 | b | 0.24 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.29 | j | |
2001 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
2002 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
2003 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
2004 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.10 | a | 0.89 | g | 1.96 | 1.47 | 3.53 | i | ||
2005 | 2.06 | 4.30 | 0.46 | 0.34 | 0.00 | 0.00 | 0.81 | 1.43 | 0.00 | 0.29 | 0.00 | 0.00 | 9.69 | |||||||||||||
2006 | 0.00 | 0.00 | 1.77 | 0.00 | 0.00 | 0.01 | 0.39 | 2.55 | 1.46 | 0.08 | 0.00 | 0.16 | 6.42 | |||||||||||||
2007 | 0.37 | 0.34 | 0.76 | 0.10 | 0.00 | 0.00 | 0.63 | 2.17 | 0.08 | 0.01 | 1.20 | 1.34 | 7.00 | |||||||||||||
2008 | 2.39 | 0.29 | 0.00 | 0.00 | 0.28 | 0.00 | 1.39 | 1.22 | 0.00 | 0.00 | 0.33 | 1.84 | 7.74 | |||||||||||||
2009 | 0.29 | 0.79 | 0.02 | 0.32 | 0.29 | 0.00 | 1.14 | 0.43 | 0.71 | 0.07 | 0.00 | 0.67 | 4.73 | |||||||||||||
2010 | 3.28 | 1.60 | 1.07 | 0.00 | 0.00 | 0.00 | 0.91 | 1.21 | 0.00 | 0.45 | 0.11 | 1.83 | 10.46 | |||||||||||||
2011 | 0.00 | 0.80 | 0.23 | 0.39 | 0.00 | 0.00 | 0.40 | 0.00 | 0.11 | 0.34 | 0.61 | 1.06 | 3.94 | |||||||||||||
2012 | 0.03 | 0.02 | 0.67 | 0.03 | 0.00 | 0.00 | 1.18 | 1.59 | 0.14 | 0.00 | 0.02 | 1.06 | 4.74 | |||||||||||||
2013 | 1.14 | 0.15 | 0.26 | 0.03 | 0.00 | 0.00 | 0.26 | 1.74 | 1.05 | 0.05 | 2.26 | 0.61 | 7.55 | |||||||||||||
2014 | 0.00 | 0.00 | 1.23 | 0.00 | 0.00 | 0.00 | 0.53 | 2.38 | 5.40 | 0.21 | 0.00 | 0.74 | 10.49 | |||||||||||||
2015 | 0.71 | 0.14 | 0.80 | 0.20 | 1.17 | 0.22 | 1.19 | 0.21 | 0.47 | 1.43 | 0.29 | 0.12 | 6.95 | |||||||||||||
2016 | 1.30 | 0.01 | 0.00 | 0.54 | 0.29 | 0.00 | 0.29 | 3.12 | 0.48 | 0.21 | 0.80 | 1.25 | 8.29 | |||||||||||||
2017 | 1.62 | 1.41 | 0.08 | 0.00 | 0.18 | 0.00 | a | 4.51 | 0.86 | 0.00 | 0.00 | 0.00 | 0.01 | 8.67 | ||||||||||||
2018 | 0.31 | 0.52 | 0.00 | 0.00 | 0.00 | 0.12 | 0.61 | 0.96 | 0.49 | 4.86 | 0.33 | 0.25 | 8.45 | |||||||||||||
2019 | 0.71 | 2.11 | 0.85 | 0.23 | 0.09 | 0.00 | 0.28 | 0.32 | 1.27 | 0.00 | 2.86 | 1.18 | 9.90 | |||||||||||||
2020 | 0.38 | 1.47 | 2.66 | 0.00 | 0.00 | 0.00 | 0.03 | 0.21 | 0.02 | d | 0.00 | 0.00 | 0.95 | 5.72 | ||||||||||||
2021 | 1.13 | 0.00 | 0.17 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 1.30 | i | |||
2022 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.90 | 0.93 | 0.80 | 0.30 | 0.13 | 0.07 | 0.77 | 1.22 | 0.84 | 0.49 | 0.64 | 1.02 | 8.02 | |||||||||||||
S.D. | 1.00 | 1.01 | 0.85 | 0.52 | 0.27 | 0.15 | 0.76 | 1.22 | 1.26 | 0.72 | 0.83 | 1.11 | 3.32 | |||||||||||||
SKEW | 2.02 | 1.60 | 1.46 | 2.96 | 3.22 | 2.47 | 2.31 | 2.06 | 2.80 | 3.27 | 2.17 | 1.44 | 1.11 | |||||||||||||
MAX | 6.14 | 4.33 | 4.05 | 3.09 | 1.48 | 0.73 | 4.51 | 7.32 | 7.55 | 4.86 | 4.91 | 4.66 | 19.09 | |||||||||||||
MIN | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 2.57 | |||||||||||||
YRS | 98 | 100 | 99 | 95 | 97 | 97 | 98 | 98 | 99 | 98 | 99 | 96 | 86 |